PSG has now won the season-opening cup on fourteen separate occasions.
The Parisian giants required a stoppage-time equaliser followed by a successful spot-kick decider to get past Marseille in the Gulf and capture a fourth straight French Super Cup title.
The Champions League holders appeared to be coasting towards a comfortable win in the showdown featuring the French league champions and the Coupe de France holders after the French winger found the net early on.
However, Marseille struck twice late to seize a shock advantage. First, Mason Greenwood scored from the penalty spot, before the defender inadvertently turned the ball into his own net for an own goal.
In a remarkable twist of fortune, the Portuguese striker grabbed a crucial equaliser in the dying seconds to send the contest into a deciding shootout. PSG goalkeeper Chevalier then stood as the key figure, saving crucial kicks from Matt O'Riley and Traore.
From the spot, Goncalo Ramos, Vitinha, the full-back, and Desire Doue all scored successfully for Paris Saint-Germain to seal a convincing shootout win.
Now 14-time champions Paris Saint-Germain, who faced last season's Ligue 1 second-placed team Marseille after achieving a league and cup double, have now won this trophy for the 12th time in the past thirteen years.
